Here is the translation (google translation) from the site http://www.hometalk.com/8027620/slat-garden-love-seat?se=wkly-20150419&date=20150419 :
“This garden chair is made of pine slats and marine plywood supports. Once sealed there is no reason for the bench to last a lifetime with regular maintenance.
If you prefer not to use the pine, you can use almost all species to make the lattice garden seat.
This seat is big enough for two, but you can do one seat, or make it bigger by adding extra brackets and longer slats.
You will NEED:
1 900 x 900mm 16mm marine plywood *
7 of 20 x 94mm PAR pin – cut to length 1040mm
12 of 20 x 69mm BY pine
– 3 cut to length of 1000mm
– 9 cut to length 1040mm
5 x 50 mm cut screws
Wood filler (tinted for finished color)
Drill / screwdriver, plus assorted bits
orbital sander over 60-, 120- and 240-grit sanding pads
Tape measure and pencil
1. The sides and central supports were cut into pieces of 900 x 900mm, pieces of marine plywood. The curves were established using the lid of a barbecue. Any important circular element can serve as a model.
2. After cutting off the sides of the room, the remaining portion was used to cut the center section. There was not enough to cut a complete section, so pieces were cut to make an entire section and these were connected to each other with exterior wood glue.
DIY TIP: If you want to add other brackets – for a solid center part or more bench – you have to order a second sheet of 900 x 900mm marine plywood.
3. On the back of each support 3 slots were cut for mounting the 20 x 69mm backrest. A 100mm split from the top – one in the center – and one down.
4. Drill 4mm holes in the plywood supports and secure with screws – two screws at each adhesion.
5. Attach the first 94mm x 20 board to the top of the bench, allowing a 20mm overhang on both sides. Drill holes before attaching with two screws at each adhesion. Repeat at the front (bottom edge) of the bench to ensure the brackets are evenly spaced from high back to front.
6. There are two 94mm boards up and down, back and forward, and three 94mm boards on the seat, the rest of the boards are 69mm. Adjust boards as best as possible and then use spacers to ensure gaps are evenly spaced before securing dry supports.
7. For this project 69mm boards were ordered with trimmings, to create a complete board.
8. All holes can be filled with wood pulp. Match the color of the wood dough to your final shade. We used imbuia woodpulp on all the holes. Leave the load of wood dry.
9. In the meantime, you can use a jigsaw to cut the edges if necessary. However, this should not be necessary if the supports are aligned and the boards are cut to the same length.
10. Sand the sharp edges between the battens.
Apply the dye »